Okay, so kids. I just read the reviews down there, and allow me to explain to you how to understand this video. I never read the rest of the author's story, and I got it. I might even look it up because it DOES make a lot of sense.
This is a fanventure based around the sensation known as Homestuck which has gotten wildly popular in the past four years. It looks like a version set after the "end" of the original series, including some of the original main characters as plot development devices and background builders.
It clearly follows the art and update style of the original webcomic, and honestly appears to be really well made from the looks of this video. Looking at the description, I wonder about the live action video updates, but if the quality of this has any bearing, I'm sure those will be fine as well.
To the author: It saddens me that you discontinued this before I even found it, but at least I know what's coming so I don't get my hopes up for updates.
Keep up the good work!